chapter 1 - info.

Question 1

scientific method

Answer 1

1) making observations
- observation of an unexplained phenomenon
- background research
2) form a hypothesis
- educated and testable explanation
3) test hypothesis
- may or may not involve experiments
- experiments must be controlled
4) analyzing data
- compare observed data to expected
- tables, graphs, statistical tests
5) reporting conclusion
- peer reviewed
- journals
- meetings

Question 2

theory

Answer 2

• different meaning in science
• proposed explanation for a wide range of observations/results sup[ported by a wide range of evidence
• not easily accepted, rejected
• never ‘proven’

Question 3

hypothesis

Answer 3

• specific in a single situation

- not supported by as much evidence

Question 4

what makes something alive

Answer 4

1) made of one or more cells
a. unicellular - organisms with one cell
b. multicellular - organisms with more than one cell
2) uses energy / have a metabolism
3) respond to the environment
- stimulus - something in the environment changes
- response - reaction of an organism
4) reproduction and development
- use DNA to pass on traits

Question 5

themes in biology

Answer 5

1) all levels of life have a system of related parts
ex. ecosystem, organ system
2) structure and function are interrelated
ex. streamlined shapes of fish/whales
ex. grinding molars
3) organisme must maintain homeostasis to survive in diverse environments
- constant internal conditions
ex. body temperature